Internal-combustion engine.



A.-F. COLLINS, A'. KERR & A. E. RUSSELL;

, INTERHKL UOMBUS-TION ENGINE -.APPLIOATION FILED MAY 21 Patented Dec. 30, 1913.

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AJR COLLINS, A. KERR 8: A. E. RUSSELL.-

INTERNAL COMBUSTION ENGINE APPLIOATION'IILED MAY 21, 1913. I

Patented Dec. 30, 1913.

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' UNITED STATES PATENT OFFICE.

ARTHUR FLOYD COLLINS AND ALEXANDER KERR, OF CHRISTCHURCH, AND ALBERT EDWARD RUSSELL, OF WELLINGTON, NEW ZEALAND.

INTERNAL-COMBUSTION ENGINE.

Specification hr Letters Patent. Pat nted Dec. 30, 1913.

Application filed ma 21, 1913. Serial No. 769,036.-

To all whom, it may concern:

Be it known that we, ARTHUR FLoYn COL- LINs and ALEXANDER KERR, residing at Qxford- Terrace, Christchurch, n the Prov ncial District of Canterbury, 1n the Dominion of New Zealand, and ALBERT EDWARD.

- RUssELL, residing at Harris street, Welling- Combustion Engines, of which the following 86 fresh gas is admitted.

is a specification.

This invention provides improved means for cooling and decarbonizin the combustion chambers and cylinders 0 internal combustion engines, and consists in providing a valve and means foroperatmg the same whereby a'charge of air is admitted to the combustion chamber and'cylinder during the outward stroke of the piston, the air so admitted beingexpelled duringthe inward stroke of the piston. By this invention a much higher crankshaft speed is obtainable 'fora given number of explosions, while the charge of air entering and exhausting not only insures the interior of the combustion chamber remaining cool and clean, but also permits a full charge of fresh gas being ad- I mitted and thereby rendering theexplosion of higher value than heretofore, Thisresult is obtained because of the fact-that the residue left from a previous explosion is entirely removed by the exhaust air before The apparatus heretofore inac'ommon use for cooling the cylinder and bomprisin a water tank, pump; radiator fan,orthe like are, =5dispensed with. The valve through which-*the air is admitted and exhausted, is preferably located at the 11 per end of the gas engine,.as illustrated. he cam for operating the valve is timed'l'to give an impulse to the valve for the ai admission and exhaust. The drawing herewith illustrates the preferred embodiment of the invention.

,-Fi gure 1, is a front elevation, and Fig. 2 a plan of a'cylinder made according to the invention, Fig. 3, is. a sationalelevation on line 'A- A, Fig. 2. Fig. 4 is a sectional plan on the line C'G, of Fig. 1, and Fig. 5, is a sectional plan on the line B--B of 1..

Re erring tothe drawing, a valve 1 openthe cam shaft 6*.

ing inwardly is provided upon any convenient part of the combustion chamber '2, and is normally held upon its seat by a spring 3, which surrounds the valve stem 4 and is in compression between the cap 5 of the valve chamber 4; and a collar 7 fixed to the valve stem 4. The valve is operated by a rocker 6 pivoted upon a pin 8 and receiving motion by a rod 6 from a cam 9 fixed upon The cap 5 has perfo'rations 5 for the passage of air to the valve chamber 4.

The cam 9 is timed to operate the valve 1 -so that admission of air to the combustion chamber follows after the expulsionof waste gases from the cylinder. The admission and expulsion of air through the valve 1 to the combustion chamber and cylinder causes cool air from outside the engine to pass into and out of the combustion chamber and cylinder, whereby the rise in temperature of these parts is checked, and the waste products of combustion are expelled, and the formation of carbon deposits is prevented. Thevalve chamber 4? above referred to maybe :used during the starting of the engine, as a priming cup, thereby securing a double function for this member.

111 operating the engine, the ordinary ex, h'aust valve 10, controlled by the rotation of the cam 11, on shaft 6", may be used as the air exhaust if desired, or the air may be admitted and exhausted through the valve 1. The valve 13 controlled by another cam on the shaft 6, is the inletafor the mixture of air and combustible gas or vapor.

What we claim is: 1

1. In an internal combustion" engine, the combination with a cylinder and piston, of

a valve opening inwardly, at the explosion end of said cylinder, means for opening said valve at about the time when the exhaust of the burned gas charge has taken place, and for seating said valve prior to the advmission of a fresh charge of explosive mixture, said means including a spring actuated valve, a valve chamber atmosphere forming an air inlet to said valve, said air chamber having a detachable spider across the top thereof, against which one end of the spring for closing the valve rests.

2. In a six-cycle internal combustion engine, a vertical cylinder having inlet and exhaust ports at its side, and having an. air

freely open to the of a fresh charge of-explosive mixture, said means including a spring actuated valve, a

valve chamber freely open to the atmosphere, forming an air inlet to said valve,- said air chamber having a'detachable spider across the top thereof, against Which one end of the spring for closing the valve rests.

In testimony whereof we have signed our names to this specification in the presence 15 of tWo witnesses.

ARTHUR FLOYD COLLINS.

ALEXANDER KERR.

ALBERT EDWARD RUSSELL. Witnesses:

E. M. KERR,

G, A. J. =HART.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patent K Washington, D. G. v 

